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2 Sheets-Shen 1. F. A. REDMON. BXPLOSIVE ENGINE.

No. 586,826. Patented July 20, 1897.

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P. A. REDMON. BXPLOSIVE ENGINE.

Patented July 20, 1897.

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UNTTEE STATES PATENT OEETCE.

FREDERICK A. REDMON, OF SAN FRANCISCO, CALIFORNIA, ASSIGNOR TOBAINBRIDGE L. RYDER, OF SAME PLACE.

EXPLOSIVE-ENGINE.

SPECIFICATION forming part 0f Letters Patent N0. 586,826, dated July 20,189'?. Application filed October 9, 1896. Serial No. 608,345. (Nomodel.)

To @ZZ whom it mf/U concern:

Be it known that I, FREDERICK A. REDMON, a citizen of the United States,residingin the city and county of San Francisco, State of California,have invented an Improvement in Explosive-Engines 5 and I hereby declarethe following to be a full, clear, and exact de scription of the same.

My invention relates to explosive-engines; and it consists in the partsand the constructions and combinations of parts hereinafter describedand claimed.

The object of my invention is to provide a simple, effective, andaccurate explosive-engine.

Referring to the accompanying drawings, Figure l is a side elevation ofmy engine. Fig. i is a sectional view of the inlet and exhaust valves.Fig. is a sectional view of the sparking device. Fig. 4t is a horizontalsection of the means for clamping the electrode T of Fig. 3. Fig. 5 is adetail of the connection for governing the inlet-valve.

A is the frame-casting of the engine. To this are bolted the cylindersB. There are two of these cylinders, and they are here shown as beingoppositely located, though this is not essential, but is the bestarrangement. The piston-rods C of these duplicate cylinders areconnected to opposite cranks d of a shaft D, which is therefore commonto both cylinders. This shaft D has a spiral gear or worm d', whichoperates with a twoto-one motion upon a spiral worm or gear e on a shaftE, which shaft is the means for operating the exhaust-valves and thesparking devices of both cylinders.

Each cylinder has an explosion-chamber t, in which the valves, both thesuction and exhaust, and the sparking electrodes are located.

F is the inlet-passage for the explosive mixture, said passage having atits inner end the seat f for the inlet-valve G, which operates bysuction. The stem g of this valve extends outwardly through the back ofthe passage and has upon its outer extremity stop-nuts g', against whichbears a sleeve g2, controlled by a spring g3, which by the contact ofthe sleeve g2 with the stop-nuts g holds the valve G closed and returnsit again to its seat after opening under suction.

The valve G is regulated as to the amount of its movement in order tocontrol the speed of the engine by admitting more or less of theexplosive mixture, according to the needs of the engine, by means of agovernor, which is represented generally by II. This governor may be ofany suitable type affected by varying speeds, in order to move a slidingpart 7L, from which the power is transmitted. This governor is driven bya belt I from the shaft E above. The sliding part 7L of the governoracts upon a crank-arm j upon a short shaft J, which hasoppositely-extending arms j', from which the connecting-rods K extend inopposite directions. The outer end of each rod is connected with acrank-arm Z on a rock-shaft L, having a forked arm Z', which bearsagainst a sliding sleeve M, said sleeve having its outer end inproximity tothe sleeve g2,which the spring gcontrols. Thus by thevarying speeds of the governor motion will be transmitted to move thesliding sleeve M, so that its end will be thrown closer to or fartherfrom the sliding sleeve g2, thereby providing for varyin gmovement ofsaid sleeve g2 before contact with said end whereby the amount of inwardmovement of the suctionvalve is regulated.

N is the exhaust-passage having the seat n for the exhaust-valve O, thestem o of which extends outwardly through the back of theexhaust-passage and has stop-nuts o upon it, against which bears asliding sleeve o2, controlled by a spring o3, whereby the exhaust-valveis controlled. The extremity of the stem o of the exhaust-valve isprovided with a hook o1, which freely engages a cross pin p on the lowerend of a pivoted hanger or link I), and said pin also carries acontact-roller p', against which a cam Q on the shaft E impinges. Therotation of this shaft, therefore, communicates movement through theimpingement of the cam on the roller to the stem o of the exhaust-valveand positively opens said valve and permits it to close again under thepower of its spring o3.

The ivoted hanger or link P serves as a guide and support for the outerend of the IOO valve-stem, whereby its movement is true and accurate.

It will be understood that the cams Q on the shaft E are relativelylocated and formed as to effect the timely movements of theexhaust-valves on each side.

The sparking device is a follows: Upon the top of each explosion-chamberis secured a casing R, which, through the intervention of suitablenon-conducting washers, is completely insulated from the explosion-chantber. On the top of this casing is screwed a cap fr, and within it isfitted a sliding clamp S, made in opposing sections provided withtransverse dowel-pins s, which are adapted to engage holes in thecontact-spring or electrode T, which is seated and confined between thesections of the clamp S. The clamp is held from rotating by means of ascrew r in the casing R, entering a groove s2 in the side of the clamp,and said clamp is moved up and down by means of a screw U, which passesdown through the cap r of the casing and has a head u fitted freely in agroove s3 in the clamp. This construction is for the purpose of enablingthe electrode or contactspring T to be moved or adjusted properly withrespect to the other electrode while the engine is in operation and alsoto provide a means for firmly and accurately holding the electrode T, sothat it will not be likely to be crystallized or otherwise injured.

The extremities of the shaft E enter the explosion-chambers throughstuffing-boxes consisting of pieces V, chambered out to receive packingat i; and fitted with coinpression-glands c to tighten the stufng. Thisconstruction avoids any leakage from the explosion-chambers. Theextremities of the shaft E within the explosion-chambers are providedwith the contact-points or electrodes W, which are adapted by therevolution of said shaft to make and break electrical connection withthe contactsprings or electrodes T and thus produce the spark, and itwill be understood that the relative location of these electrodes WV issuch as to produce the timely explosion in each chamber. The cylindersand explosion chambers are water-jacketed, as usual, the water enteringat X and issuing at Y.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

1. In an explosive-engine, the combination of duplicate cylinders, thepistons of which are connected with a crank-shaft com mon to both, adriven shaft operated from said crankshaft, having its extremitiesprojecting directly into the explosion-chambers, electrodes in theexplosion-chambers of the cylinders, and electrodes on the extremitiesof said driven shaft operating in connection with the first-namedelectrodes for producing the spark in each explosion-chamber at timelyperiods.

2. In an explosive-engine, the combination of duplicate cylinders, thepistons of which are connected with a crank-shaft common to both, adriven shaft operated from said crankshaft, having its extremitiesprojecting directly into the explosion-chambers, electrodes in theexplosion-chambers of the cylinders, electrodes on the extremities ofthe driven shaft, for operating in connection with said first-namedelectrodes for producing the spark at proper times in eachexplosion-chamber, exhaust-valves in said explosion-chambers andconnections whereby the exhaust-valve of each chamber is operated fromthe driven shaft.

3. In an explosive-engine, the combination of duplicate cylinders, thepistons of which are connected with a crankshaft common to both, adriven shaft operated from the crankshaft, spring-controlledexhaust-valves in the explosion-chambers of the cylinders, cams on thesingle shaft for operating the exhaustvalve of each chamber at propertimes, and the hangers or links for supporting the outer extremities ofthe exhaust-valve stems and having the contacts against which the camson the driven shaft operate.

it. In an explosion-engine, the combination 4of duplicate cylinders, thepistons of which are connected with a crank-shaft common to both, thedriven shaft operated from said crank shaft, electrodes in theexplosion* chambers of the cylinders, stuffing-boxes in said chambersthrough which the extremities of the driven shaft enter, and electrodeson said extremities within the chambers for operating in connection withthe firstmained electrodes to produce the spark in each chamber atproper times.

5. In an explosive-engine, a movable electrode within theexplosion-chamber thereof, in combination with an opposing electrodetherein, and the means for holding and adjusting said opposingelectrode, consisting of the casin g insulated from theexplosion-chamber, the slidable clamp within said casin g and adapted toreceive and hold the electrode, and the exterior screw engaging saidclamp for moving it to adjust the electrode.

6. In an explosive-engine, a movable electrode within theexplosion-chamber thereof, in combination with an opposing electrodetherein,and the means for holding and adjusting said opposing electrode,consisting of the casing insulated from the explosion-chamber, theslidable two-part clamp within said casing and having pins adapted toreceive and hold the electrode, the exterior screw engaging said clampfor moving it to adjust the electrode, and the screw passing through thecasing and engaging a groove in the clamp to prevent its turning whilebeing moved lineally.

7. In an explosive-engine, the suction-valve in the explosion chamberhaving an outwardly-projecting stem with stop-nuts, a sliding sleeve onsaid stem controlled by a spring for impinging against said nuts toreturn the valve, in combination with the means for con- IOO IIO

trolling the movement of said valve, consisting of a governor driven bythe engine, powertransmitting Connections from said governor, and asliding sleeve operated by said connections to come into more or lessproximity with the sleeve of the valve-stein to limit the movement ofthe latter.

8. In an explosiveengine, an inlet or suction valve having aspring-Controlled stein, in combination With a sliding sleeve in thepath of movement of said stem and adapted by its position to limit, atvarious points, the movement of said stem, and a governor driven by theengine and having Connections to operate the sliding sleeve.

9. In an explosive-en gine, the combination of duplicate cylinders, thepistons of which are Connected with opposite cranks of a erankshaftcommon to both Cylinders, a driven shaft operated from the crank-shaft,spring-oon trolled inlet or suction valves in the eXplosion-Chambers insaid cylinders, a governor operated by the driven shaft, a slidingsleeve, one for each suction-valve and in the path of movement thereof,adapted by its position to limit, at various points, the movement of thesuction-valve stems, and Connections between the governor and saidsliding sleeves for operating the latter.

10. In an explosive-engine, the Combination of duplicate cylinders, thepistons of which are connected With a Crank-shaft common to both, adriven shaft operated from said erankshaft, exhaust-valves andconnections from said driven shaft for operating said valves, anelectrode in the explosion-chamber of the cylinders, and electrodes onthe driven shaft operating in connection with said rst-named electrodes,inlet or suction valves to the eX- plosion-ehambers havingspring-Controlled stems, a sliding sleeve adapted by its position tolimit at various points the movement of said inlet-valve stems, agovernor operated by the driven shaft and connections from said governorto operate the sliding sleeve.

In Witness whereof I have hereunto set my hand.

FREDERICK A. REDMON.

NVitneSSes:

HENRY M. MCGILLV S, Il, NoURsE.

